(Building Dec 1923:134; CPIA Ms cf HJ Louw; Huisgenoot 16 Aug 1963:18-21; Moerdyk papers, HSRC doc)
All truncated references not fully cited in 'References' are those of Joanna Walker's original text and cited in full in the 'Bibliography' entry of the Lexicon.
Church hall: 1923. Bloemfontein, Free State - Architect
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Gereformeerde Kerk: 1924. Bethulie, Free State - Architect
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Gereformeerde Kerk: 1922. Bloemfontein, Free State - Architect
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Gereformeerde Kerk: 1927. Bloemfontein, Free State - Architect 
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Gereformeerde Kerk: 1925. Reddersburg, Free State - Architect
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Nederduitse Gereformeerde Kerk: 1921. Dundee, KwaZulu-Natal - Architect 
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Nederduitse Gereformeerde Kerk: 1923. Durban, KwaZulu-Natal - Architect
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Nederduitse Gereformeerde Kerk: 1925-1926. Turffontein, Johannesburg, Gauteng - Architect
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Nederduitse Gereformeerde Kerk: 1926. Kestell, Free State - Architect
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Nederduitse Gereformeerde Kerk: 1924. Luckhoff, Free State - Architect
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Nederduitse Gereformeerde Kerk: 1926. Marquard, Free State - Architect
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Nederduitse Gereformeerde Kerk: 1921. Volksrust, Mpumalanga - Architect
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Nederduitse Gereformeerde Kerk: 1940. Winburg, Free State - Architect
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Nederduitse Gereformeerde Kerk - Klipkerk: 1923. Bloemfontein, Free State - Architect
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NGK Saal - Hall: n.d.. Winburg, Free State - Architect 
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Synod Hall: 1926. Bloemfontein, Free State - Architect
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Greig, Doreen. 1971. A Guide to Architecture in South Africa. Cape Town: Howard Timmins. pp
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Hillebrand, Melanie. 1986. Art and architecture in Natal, 1910 1940. Pietermaritzburg: Unpublished Ph.D. Dept Fine Art and History of Art, University of Natal. pp
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Kesting, DP. 1978. Afrikaans Protestantse kerkbou : erfenis en uitdaging. Port Elizabeth: Unpublished PhD. pp
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